140
FNCA52 TJSJ 030730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST THU SEP 3 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-032000-
SOUTHEAST COASTAL PLAINS-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 20
TEMP (24H TREND) 91 (0) 74 (-3) 91
RH % (24H TREND) 45 (-12) 85 (-1) 51
WIND 20FT/EARLY(MPH) E 12 E 11 E 11
WIND 20FT/LATE(MPH) SE 12 G20 NE 8 SE 12
MIXING HGT(FT-AGL/MSL)4640 4580
TRANSPORT WND (MPH) E 12 E 14
VENT RATE (KT-FT) 46400 54960
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-032000-
SOUTHERN HILLS-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 20 30
TEMP (24H TREND) 89 (+2) 71 (-3) 90
RH % (24H TREND) 58 (-8) 95 (+2) 57
WIND 20FT/EARLY(MPH) E 11 E 9 E 10
WIND 20FT/LATE(MPH) SE 11 E 9 SE 11
MIXING HGT(FT-AGL/MSL)5260 5570
TRANSPORT WND (MPH) E 10 E 13
VENT RATE (KT-FT) 47340 61270
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-032000-
NORTH COASTAL PLAINS-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 0 40
TEMP (24H TREND) 91 (+1) 73 (-4) 92
RH % (24H TREND) 59 (-8) 96 (+3) 58
WIND 20FT/EARLY(MPH) E 12 E 12 E 10
WIND 20FT/LATE(MPH) E 13 SE 9 E 17
MIXING HGT(FT-AGL/MSL)4560 4750
TRANSPORT WND (MPH) E 12 E 12
VENT RATE (KT-FT) 45600 47500
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-032000-
NORTHERN HILLS-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 10 50
TEMP (24H TREND) 90 (+1) 71 (-3) 90
RH % (24H TREND) 63 (-6) 98 (+1) 60
WIND 20FT/EARLY(MPH) E 10 E 10 E 9
WIND 20FT/LATE(MPH) NE 12 SE 5 E 13
MIXING HGT(FT-AGL/MSL)5400 6000
TRANSPORT WND (MPH) E 9 E 9
VENT RATE (KT-FT) 43200 48000
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-032000-
WEST COAST-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 50 50
TEMP (24H TREND) 92 (0) 72 (-2) 92
RH % (24H TREND) 62 (-2) 98 (+1) 59
WIND 20FT/EARLY(MPH) E 10 E 11 E 11
WIND 20FT/LATE(MPH) E 10 E 11 SE 12
MIXING HGT(FT-AGL/MSL)4770 4480
TRANSPORT WND (MPH) E 7 E 10
VENT RATE (KT-FT) 28620 40320
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-032000-
EASTERN INTERIOR-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 40
TEMP (24H TREND) 90 (+1) 72 (-4) 90
RH % (24H TREND) 57 (-7) 94 (+2) 58
WIND 20FT/EARLY(MPH) E 10 E 10 SE 10
WIND 20FT/LATE(MPH) E 11 SE 10 SE 12
MIXING HGT(FT-AGL/MSL)5000 6160
TRANSPORT WND (MPH) E 12 SE 14
VENT RATE (KT-FT) 50000 73920
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-032000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 50
TEMP (24H TREND) 86 (+3) 70 (-4) 86
RH % (24H TREND) 61 (-9) 98 (+3) 64
WIND 20FT/EARLY(MPH) E 10 E 8 SE 9
WIND 20FT/LATE(MPH) E 10 SE 8 SE 10
MIXING HGT(FT-AGL/MSL)4420 4180
TRANSPORT WND (MPH) E 12 E 14
VENT RATE (KT-FT) 44200 50160
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-032000-
CENTRAL MOUNTAIN RANGE-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 70 40 60
TEMP (24H TREND) 87 (+3) 68 (-3) 88
RH % (24H TREND) 66 (-6) 98 (+1) 62
WIND 20FT/EARLY(MPH) E 6 E 8 SE 8
WIND 20FT/LATE(MPH) SE 8 SE 6 SE 8
MIXING HGT(FT-AGL/MSL)5910 7230
TRANSPORT WND (MPH) E 8 E 8
VENT RATE (KT-FT) 41370 50610
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-032000-
CAYEY MOUNTAIN RANGE-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 40
TEMP (24H TREND) 86 (+1) 70 (-3) 86
RH % (24H TREND) 62 (-5) 97 (+1) 62
WIND 20FT/EARLY(MPH) E 10 E 8 E 9
WIND 20FT/LATE(MPH) E 10 E 6 E 10
MIXING HGT(FT-AGL/MSL)4790 5060
TRANSPORT WND (MPH) E 12 E 14
VENT RATE (KT-FT) 47900 60720
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-032000-
VIEQUES-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 50
TEMP (24H TREND) 90 (0) 79 (-2) 90
RH % (24H TREND) 55 (-4) 80 (0) 58
WIND 20FT/EARLY(MPH) E 11 E 11 E 11
WIND 20FT/LATE(MPH) E 11 E 12 E 11
MIXING HGT(FT-AGL/MSL)3490 3170
TRANSPORT WND (MPH) E 13 SE 14
VENT RATE (KT-FT) 38390 38040
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-032000-
CULEBRA-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 50
TEMP (24H TREND) 90 (+1) 79 (-2) 90
RH % (24H TREND) 58 (-7) 83 (+1) 61
WIND 20FT/EARLY(MPH) E 11 E 11 E 11
WIND 20FT/LATE(MPH) E 11 E 12 E 12
MIXING HGT(FT-AGL/MSL)3440 3370
TRANSPORT WND (MPH) E 13 SE 15
VENT RATE (KT-FT) 37840 43810
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-032000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 20
TEMP (24H TREND) 91 (0) 74 (-3) 91
RH % (24H TREND) 52 (-5) 88 (0) 49
WIND 20FT/EARLY(MPH) E 12 E 12 E 13 G21
WIND 20FT/LATE(MPH) SE 12 G20 E 12 SE 14 G22
MIXING HGT(FT-AGL/MSL)4740 4520
TRANSPORT WND (MPH) E 13 E 17
VENT RATE (KT-FT) 52140 67800
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-032000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 50
TEMP (24H TREND) 89 (+2) 79 (-2) 89
RH % (24H TREND) 57 (-7) 84 (+2) 60
WIND 20FT/EARLY(MPH) E 12 E 12 E 12
WIND 20FT/LATE(MPH) E 11 E 13 E 12
MIXING HGT(FT-AGL/MSL)3510 3080
TRANSPORT WND (MPH) E 13 E 17
VENT RATE (KT-FT) 38610 46200
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-032000-
ST CROIX-
330 AM AST THU SEP 3 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 50
TEMP (24H TREND) 90 (+2) 79 (-2) 90
RH % (24H TREND) 58 (-6) 84 (+1) 63
WIND 20FT/EARLY(MPH) E 11 E 11 E 12
WIND 20FT/LATE(MPH) E 11 E 11 E 13
MIXING HGT(FT-AGL/MSL)4440 4430
TRANSPORT WND (MPH) E 14 E 17
VENT RATE (KT-FT) 53280 66450
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page